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Wrist cuffed to chain

Physical restraint refers to the practice of
rendering people helpless or keeping them in captivity by means
such as handcuffs, fetters, straitjackets, ropes, straps, or other forms of physical restraint.
Alternatively, unarmed combat techniques or sheer force of
numbers may be used to restrain a person.

Contents

British
police use

British Policeofficers are
authorised to use leg and arm restraints, if they have been
instructed in their use. Guidelines set out by the Association of Chief
Police Officers dictate that restraints are only to be used on
subjects that are violent while being transported, restraining the
use of their arms and legs, minimising the risk of punching and
kicking. Pouches carrying restraints are usually carried on the duty belt,
and in some cases carried in police vans

For these and many other reasons, extreme caution is needed in
the use of physical restraint.

Gagging a restrained person is
highly risky, as it involves a substantial risk of asphyxia, both from the gag
itself, and also from choking or vomiting and being unable to clear the airway.
In practice, simple gags do not restrict communication much;
however, this means that gags that are effective enough to prevent
communication are generally also potentially effective at
restricting breathing. Gags that prevent communication may also
prevent the communication of distress that might otherwise prevent
injury.